1. Radiation dose reduction using novel size 1 and size 0 rectangular collimators in pediatric dental imaging.
- Author
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Mupparapu, Mel, Bass, Tetiana, Axline Jr, David, Felice, Marc, and Magill, Dennise
- Subjects
RADIATION doses ,COLLIMATORS ,PEDIATRIC diagnostic imaging ,DENTAL radiography ,RADIATION protection ,PEDIATRIC dentistry ,RADIATION injuries ,X-rays ,PRODUCT design - Abstract
Objectives: Commercial intraoral rectangular collimators are available for collimating to size 2 image receptor. The benefits of reducing the x-ray beam to match the area of the image detector in adult intraoral radiography are endorsed internationally. However, in pediatric dentistry the image receptor can be further decreased to size 1 and 0. Method and materials: For this study size 1 and 0 rectangular collimators were fabricated using 1.65-mm lead sheets (Rotometals). The custom-fabricated collimators were fixed to the plastic body of a Rinn (Dentsply) Universal Collimator attachment. Aperture sizes were extrapolated based on the active imaging area of size 1 and 0 digital image receptors. A dose area product (DAP) measuring device was used to determine the change in radiation absorbed dose as a function of the imaging field of view. Results: DAP measurements were evaluated in the 31.7 cm² conventional round collimation, Rinn 12.0 cm² Universal rectangular collimator, and in the manufactured size 1 (8.25 cm²) and size 0 (5.72 cm²) rectangular collimators. The size 1 collimator had a 32% DAP reduction from the size 2, and a 53% reduction for the size 0. Conclusion: Size 1 and size 0 rectangular collimators can be independently manufactured and utilized in pediatric dentistry. This study suggests that a considerable radiation dose reduction is possible in pediatric intraoral imaging when using the size 1 and 0 matched collimation. Since the pediatric population is vulnerable to radiation exposure, any measurable reduction has a potential for long-term health benefits and is therefore clinically significant. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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